Cisco 8821 Manual page 9

Note: The Cisco Wireless IP Phone 8821 and 8821-EX are supported with the Cisco AP3600 when the internal 802.11a/b/g/n
radio is utilized, however is not supported if the 802.11ac module (AIR-RM3000AC) for the Cisco AP3600 is installed.
The table below lists the modes that are supported by each Cisco Access Point.
Cisco AP 802.11a 802.11b 802.11g 802.11n 802.11ac Lightweight Autonomous
Series
600 Yes Yes Yes Yes No Yes No
Cisco Wireless IP Phone 8821 and 8821-EX Wireless LAN Deployment Guide
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